To mitigate the performance degradation low-resolution precoding have been receiving increasing attention of the wireless communications community.
Several precoding strategies with low-resolution data converters exist in literature. Linear approaches, such as the phase Zero-Forcing (ZF-P) precoder [1]}, the Wiener Filter Quantized (WFQ) precoder [2]} and the Sparse-ZF method [3]}, have been proposed and benefit from a relatively low computational complexity.
However, to achieve a higher degree of reliability nonlinear symbol level precoding (SLP) methods have been presented based on different design criteria. The most popular criteria are the minimum mean squared error (MMSE) and the maximum minimum distance to the decision threshold (MMDDT).
